作业帮|1/3-1|+|1/5-1/3|+…+|1/2009-1/2007|=
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/08 11:04:11
|1/3-1|+|1/5-1/3|+…+|1/2009-1/2007|=
|1/3-1|+|1/5-1/3|+…+|1/2009-1/2007|=
|1/3-1|+|1/5-1/3|+…+|1/2009-1/2007|=
|1/3-1|+|1/5-1/3|+…+|1/2009-1/2007|
=1-1/3+1/3-1/5+ ……+1/2007-1/2009
=1-1/2009
=2008/2009
=1-1/3+1/3-1/5+ ……+1/2007-1/2009
=1-1/2009
=2008/2009